feat: themes

backend/uframe/__init__.py

@@ -21,6 +21,7 @@ from uframe.ir import (
     IRNode, Field, Password, Radio, Checkbox, FormButton,
     Source, IfBlock, ForLoop, OnSubmit, StateDecl, CacheControl,
 )
+from uframe.themes import get_theme, ThemeDef
 
 
 @dataclass
@@ -79,7 +80,7 @@ def _micron_form_line(node: IRNode) -> str:
     return ""
 
 
-def compile(source: str, width: int = 64) -> CompileResult:
+def compile(source: str, width: int = 64, theme: str = "") -> CompileResult:
     """Compile a µFrame .uf source string into ASCII and Micron output.
 
     Args:
@@ -102,6 +103,10 @@ def compile(source: str, width: int = 64) -> CompileResult:
 
     w = page.width
 
+    # 1b. Resolve theme (CLI flag overrides source directive)
+    theme_name = theme or page.theme_name or "default"
+    theme_def = get_theme(theme_name)
+
     # 2. Measure
     measure(page, w)
 
@@ -110,7 +115,7 @@ def compile(source: str, width: int = 64) -> CompileResult:
 
     # 4. Create grid and paint
     grid = CharGrid(w, max(total_h, 1))
-    paint(page, grid)
+    paint(page, grid, theme_def)
 
     # 5. Merge borders
     merge_borders(grid)